Clamp



I Jan. 1,1929. 1,696,905

A. M. DESLAURIERS CLAMP Filed June 1926 v I N V EN TOR. 9)? a? 31 Jada wzers BY MAM. Hi -76 ATTORNEYS Patented Jan. 1, 1929.

UNITED STATES 1,696,905 PATENT OFFICE.

ALFRED M. DESLAURIERS, OF DETROIT, MICHIGAN, ASSIGNOR TO DESLAURIERS METAL PRODUCTS COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF ILLINOIS.

CLAMP.

Application filed June 7,

This invention relates to clamps for concrete forms, and more particularly to improvements therein pertaining particularly to simplifying devices of this character, thereby rendering the same more economical to manufacture and easier to manipulate.

The invention therefore has among its objects to simplify, render more efficient and to improve generally devices of this character, and to this end consists in the novel combination and arrangement of parts more particularly described in the accompanying specification and illustrated in the drawings wherein V Figure 1 is a fragmentary perspective view of a concrete form, showing the application of this invention;

Figure 2 is a fragmentary edge elevat-ional view of the construction illustrated in Figure 1 and Figure 3 is a fragmentary sectional view taken substantially in the plane of line 33 of Figure 1.

Referring now particularly to the drawings-wherein like reference characters indicate like parts, it will be noted that the reference character 10 indicates the customary concrete form, which is adapted to be clamped together by clamps such as forms the subject matter of this present invention. In practice this is accomplished by a plurality of arm members 11 custon'iarily formed in pairs pivotally connected at one end, as indicated at 12. Thus the free end of one of the arm members of one pair will be ar ranged in overlapping or crossed relation with reference to an arm member 11 of the other pair at one of the corners of the concrete form, and as this construction is duplicated at the diametrically opposite corner of the form, only one corner is illustrated in detail herein.

Referring more particularly to Figure 1, it will be noted that the overlapping ends of the arm members 11 are adjustably connected together by means of bracket members 13, each of which comprises a sleeve-like por tion let through which the end of the cone sponding arm member 11 extends, so that the bracket 13 is slidably mounted upon its arm member. Each bracket 13 is further provid ed with a tongue or extension 15, which is adapted to overlie the adjacent arm member 11 at the point at which it crosses or intersects the other arm member 11. The position 1926. Serial No. 114,326.

tension 15 of one bracket is arranged on top 1 of the intersecting arm member, while the extension 15 of the other bracket 18 is'arranged under the intersecting portion of the first arm member 11. I

The extension 15 of each of the brackets 13 is made relatively narrower than the bracket so as to provide abutting shoulder portions 16 at the apex of the right angle formed by the abutting brackets. Furthermore, one edge 17 ofeach of the tongues 15 will lie parallel with and in abutting relation to the adjacent end face 18 of the other bracket. It will furthermore be noted that the extensions 15 of each bracket which overlies the intersecting portion of the other arm member, prevents any independent or relative vertical movement between the arm members. Furthermore the longitudinal outer edge of each arm member 11 abuts the adjacent end of the sleeve portion 14: of the bracket to thus prevent any horizontal rela-. tive movement between the arm members.

The end of each arm member 11 is formed with a plurality of openings 19 and each bracket is provided in the sleeved portion thereof with a pair of aligned openings 20, which are adapted to be brought into registration with the openings 19 of the corresponding arm member for the reception of a wedge member 21. The wedge member 21 may be driven through the aligned openings in the bracket and arm member to tighten the arm members 11 with reference to the concrete form 10, as is customary in this art, and the arms may be progressively tightened by driving the wedge 21 through these aligned openings until an opening 19 is positioned beyond the end of the bracket, whereby a wedge may be inserted in this opening and the bracket 13 forced longitudinally of the arm 11 by the engagement of this wedge with the end of the bracket. Thus by alternately placing a wedge either through the aligned openings in the bracket and the arm or in the opening beyond the edge of the bracket and driving the wedges in place as is customary, the clamp may be tightened with reference to the concrete form to any desired degree.

Obviously it is not essential that the arms be arranged in pairs pivotally connected at one end, as the arrangement of brackets may engaging each of said members, said blocks having end faces disposed substantmlly at right angles to each other an extension on each of .Saicl blocks overlapping the adjacent port-ion of the other arm member at the point 0i. intersection. each of said extensions havlng an edge parallel With and abutting the respective end faces of the other block, and adjust ingmeans engagoable with said brackets and arm members.

In testimony whereof I afiix my signature.

ALFRED M. DESLAURIERS. 

